gummy bear osmosis experiment vinegar

• Elementary Homeschool

Gummy Bear Science Project

Are you wondering what a gummy bear experiment is? What liquid makes a gummy bear grow? Or what happens when you put gummy bears in water?

Did you know a gummy bear will grow when placed in a variety of liquids by using the process known as osmosis? Since the gummy bear water was removed when it was created, when you place a gummy bear in water the water will move into the bear by osmosis. But in which liquid will the gummy bear grow the most? Find out as we use the scientific method in this gummy bear science experiment !

Undoubtedly, this is one of our favorite science experiments of all time, we call it Gummy Bear Osmosis.  One of our contributors, Jordyn C. Jordyn , performed this gummy bear osmosis experiment with her children, and we will share her results with you below, but if you’d like to perform your own experiment, here is what you will need.

Scientific Terms to Know For the Gummy Bear Science Experiment

• osmosis – passing of a material (like water) through a membrane (a gummy bear)
• equilibrium – a state where opposite forces are balanced so one isn’t stronger than the other
• membrane – a thin, soft layer of material that separates two things
• cells – basic building blocks of all things
• semi-permeable – only certain, small molecules can get through
• solute – a substance that dissolves (like sugar in water)
• solvent – a substance that is able to dissolve other substances (like the water that dissolves the sugar)
• gelatin – a food ingredient made from collagen that makes liquids become squishy solids (like jello, marshmallows, gummies, etc.)
• gummy bear – a gelatin substance with no water

Science Behind the Gummy Bear Experiment Explained

This science experiment lab is supporting the concepts of osmosis, equilibrium, solutions, solutes, and solvents . A solution is a homogenous mixture of one or more substances. The parts that are mixed to achieve a solution are called the solute and the solvents .

In most cases, a sugary substance (sugar or even sugary candy) will dissolve quickly and easily in water. When you dissolve sugar in water, the water becomes the solvent and the sugar is the solute . While there can only be one solvent in a solution, but there can be many solutes (gummy bears, sugar, candy, etc).  However, in this science lab, we will be using water and several other types of solvents like vinegar, milk, saltwater, or other solvents (liquids) you have on hand to use in the experiment.

What Is Happening In this Gummy Bear Experiment

In this experiment, the water or liquid can enter the gummy through the membrane without letting out the sugar. The change that will occur to the gummy bears is osmosis and the process that it uses is equilibrium .  This process of equilibrium allows water to diffuse from a higher area of concentration to a lower area of concentration. For a visual explanation, you can watch this science experiment video , or use this Gummy Bear Chemistry PowerPoint .

The point of this science lab experiment is to understand the process of osmosis and equilibrium . Watch this video on osmosis before the experiment to help the kids understand the background concepts thoroughly. Then take time to print out the Gummy Bear Osmosis Lab Printables or the Science Experiment Journal Kit at the bottom of this post.  In additon, you may also want to discuss the concept of semi-permeable membranes and, if your homeschoolers are old enough, you could even try this experiment using eggs and other solvents as well! In fact, we really enjoyed this osmosis experiment using eggs .

Additionally, it is a good idea to use the same color gummy bear throughout the experiment. We know colors are fun, but when you use different colors, that adds a variable to the experiment. Or in other words, it adds another option or reason for a difference in the end result. However, if we use all the same color and same size gummy bears, then the end results of our experiment will be more reliable.

Materials You Need for The Gummy Bear Science Project

• Gummy bears (for experimentation and comparison…and maybe an extra pack for snacking)
• A small glass for each water/solution
• Baking soda
• Paper towels
• Kitchen scale

Instructions for Gummy Bear Experiment

• Then, add a half cup of water to the tap water glass.
• Then, add a half cup of water and 1 tablespoon of salt to the saltwater glass. Stir the salt until it is dissolved.
• Next, add a half cup of water and 1 tablespoon of sugar to the sugar water glass. Stir until the sugar is dissolved.
• Then, add a half cup of water and 1 tablespoon of baking soda to the baking soda water glass. Stir until the baking soda is dissolved.
• Then, add a half cup of your soda of choice to the soda glass.
• Next, add a half cup of vinegar to the vinegar glass.
• Finally, add a half cup of milk to the milk glass.

**Any of these liquids can be omitted or changed according to your preference.**

• Weigh and measure a gummy bear and record results.
• Add one gummy bear to each glass of liquid.
• Set a timer for 12 hours.
• After the timer goes off, remove each gummy bear from its solution, weigh, measure, and compare to a new gummy bear.
• Discuss the results and complete the worksheet (found below).

**To extend the experiment, return the gummies to their original glasses for an additional 12 hours and check results again.**

One Family’s Gummy Bear Osmosis Experiment

“Science is fun at our house, and we decided to try the dissolving gummy bear experiment. We decided to try different liquids and solutions to see if we would get different results. First, we measured and weighed the gummy bears and recorded our results. Next, we put a gummy bear in plain water, sugar water, saltwater, vinegar, milk, and baking soda water. We let them sit for 12 hours and then checked on them the next morning to see what had happened. Testing Our Gummy Bear Osmosis Lab Results We decided to try different liquids and solutions (further expanding on our solubility lesson a.k.a. gummy bear experiment) to see if we would get different results.  First, we measured and weighed the gummy bears and recorded our results. Next, we put a gummy bear in plain water, sugar water, saltwater, vinegar, milk, and baking soda water.  We let them sit for 12 hours and then checked on them in the morning to see what had happened. The results were quite surprising! The kids all wanted to know what had happened and why they hadn’t dissolved like other water experiments we had tried. Scientific Conclusions For The Gummy Bear Experiment The results were quite surprising to my kids! Instead of dissolving, the gummies grew, some to almost triple their original size! We compared our new gummies to their unchanged counterparts and noted our scientific observations including weight and measurements. The gummy bear that absorbed the most was the one put in plain water. The one that grew the least was the one put in saltwater. Interestingly, the gummy bears remained completely intact, just larger, with the exception of the one put in vinegar. The gummy bear we put in vinegar did expand, but lost all of its gummy bear shape and just became a blob. We believe that the acid in the vinegar dissolved the gummy bear completely. The answer to our gummy bear experiment was simple.   Osmosis !  I explained that osmosis is when a liquid (usually water) moves from one side of a membrane to another. Science is All About Trying Again I was met with blank stares and crickets….hmmmm….let’s try this again…..I told them to imagine themselves at the Haunted Mansion at Disney on a really crowded day. They take you into the little room and cram you all together before the ride starts. Think of how uncomfortable you feel pushing against other people, just wanting to get out, when finally they open the door and you are able to move away from other people and through the door.  This is exactly the same as osmosis .  You are water molecules , with the door being the membrane . The water molecules are all crammed up, so they move to where there are none of them, through the membrane. Then they got it!  I explained that the gummy bears were not solutes, they were actually polymers and therefore were able to absorb the water by osmosis.  Cool!! We got out our sheet and compared our new gummies to their unchanged counterparts and noted our scientific observations including weight and measurements.  You can clearly see that the gummy bear that absorbed the most was the one put in plain water, while the one that was the one put in saltwater changed the least. Interestingly, the gummy bears remained completely intact, just grew larger, with the exception of the one put in vinegar. We posit that the acid in the vinegar dissolved the gummy bear completely into this gummy blob. This science experiment was so easy and so much fun! The kids loved it, and it was awesome to see that they actually retained what they learned. It was the perfect way to bring in some fun STEM learning to our homeschool science. Our gummy bear science project was a success!” – Jordyn C. 

Gummy Bear Science Project Results. Why Did the Bears Get so Big?

Well, we already know from the introduction that water diffuses from an area of high concentration of water molecules to an area of low water concentration. At the beginning of the experiment, there is less water and more gelatin inside each gummy bear. As time goes on, this changes and the gummy bear begins to act as a sponge.

In the last part of this experiment, water moves into the Gummy Bear, clearly where there are fewer water molecules. Therefore, making it swell up. In fact, the water keeps moving until the water molecules are evenly spaced out (for example: when they have reached equilibrium). In the end, the molecules will stop diffusing when they reach equilibrium or when there is the same concentration of water molecules in the gummy bears as there are outside of the gummy bears.

Start Here: Print Your Gummy Bear Experiment Worksheet pdf

Obviously, every good experiment makes use of lab notes. Along with the steps above, we’ve compiled gummy bear experiment notes that will help you work through this experiment and learn the science behind it. This set includes Gummy Bear Science:

• Terms to define
• Experiment chart
• Experiment Follow-up Questions

Additional Science Lab Experiments To Try After The Gummy Bear Experiment

If your kiddos loved doing this lab, then you’ll want to explore our collection of fun and free science-based lesson plans for kids who hate science ! We know how difficult it is to plan and execute science experiments while you are homeschooling multiple children. It’s so important to make the experience unbelievably fun homeschool science and to fun ways to bring science labs into everyday life. We have three homeschool science experiments that are sure to help you do that with minimal effort. Our simple home science experiments will have your kids laughing and wanting more. Try our science slime experiments and the soggy cereal science experiment as your next adventure in homeschool science labs!

Jamie Gaddy

Jamie Gaddy, B.S., M.Ed., Ed.D. has been a college education professor for over 17 years. Education has been a part of her life in both the classroom and as a principal. Six children later found her dissatisfied with traditional school and homeschool became the better fit. She is also a pastor’s wife, editor, and entrepreneur who now homeschools four of her six children in Georgia. Jamie loves to share about her homeschool experience to help other homeschoolers find success. Connect with her at [email protected] .

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Gummy Bears Osmosis Experiment

Today we will combine two fun activities from our childhood: eating gummy bears and learning about osmosis just kidding about osmosis being fun, back then it was a hard concept to grasp. but in today’s experiment, we will show you how to learn this important concept in a fun and easy way, article contents.

What is Osmosis?

Osmosis is defined as the movement of water molecules from a solution with a higher concentration of water molecules to a solution with a lower concentration of water molecules, through a cell’s semipermeable (partially permeable) membrane . What do we mean by the concentration of water? It’s the proportion of the water in a solution. Let’s talk about that next.

Solvent, Solute, and Solution

Speaking about Osmosis, you will probably often hear about solvent, solute, and solution. So let’s see what they are.

A solvent is any substance that dissolves other substances that we put in it. The most common solvent is water . We know that if we, for example, add sugar to the water, it will dissolve. This is important since, in our organism, water dissolves ions and proteins in our cells.

On the other hand, in our example above, the sugar would be a solute . The solute is a substance dissolved in another substance. So, sugar (solute) dissolves in water (solvent).

And the product we get is called a solution . Solutions can have different concentrations , depending on how much solute we dissolve in a solvent. If we add more sugar to the water, it will be sweeter and denser, more concentrated. However, this solution will now have a lower concentration of water molecules, since there are other things (sugar) in as well.

To summarise – when sugar (solute) dissolves in water (solvent) we get a mixture of water and sugar (solution) .

What is Semi-Permeable Membrane?

Think of the membrane as a wall with gaps (it’s semipermeable!). When solutions on both sides of the wall have the same concentration, nothing interesting happens – there is an equal probability water molecules will move from each side of the wall so in the end concentration will stay the same.

However, if we change the balance on one side of the wall, for example, add salt to one side – water molecules will now move from the place where there are more of them (ordinary water) to a place where there are fewer of them (salted water).

This state of different concentrations is also called osmotic pressure and therefore the amount of liquid will increase on the side with more salt, and decrease on the side where the salt concentration is lower until the osmotic pressure is equalized. The goal is to reach equilibrium, a state where concentrations are the same on both sides.

Here, we have 2 explanations of the process:

• The Mechanical explanation is that molecules of salt are blocking the movement of the water molecules so they are less likely to move from that side. 
• The Chemical explanation is that salt molecules consist of ions – Na+ and Cl-. Since water molecules are also partially charged they are attracted to salt molecules and therefore don’t move through the membrane.

Why Is Osmosis Important?

Osmosis is essential for the survival of all living organisms . It allows nutrients and minerals to move inside the cells, through the cell membrane, and also for waste to move out of the cells. For example, plants absorb water from the earth through the process of osmosis.

Try to remember the last time you ate something salty, such as chips. You must have been very thirsty afterward. This is because salt prevents water from passing into the cell through the semipermeable membrane and no matter how much you drink, it is difficult to quench your thirst.

Let’s go now and demonstrate the osmosis process in a simple way using gummy bear candies and different solutions.

Materials needed for the Gummy Bear Experiment

• Gummy bears (gummy candies) . You can buy gummy candy in any grocery shop. We have used Haribo gummy bears and they worked well for our experiment. It is not important which gummy candy you use, but we have got reports that some types/brands of gummy candy won’t work well and will just dissolve. Best to have at least 4 gummy bears to make easy comparisons of all experimental results and the original gummy bear.
• Water . 2 deciliters of water will be enough. We will add 1 deciliter to 2 of our glasses. 
• Salt . One tablespoon of salt will be enough to act as a solvent and create a concentrated solution.
• Vinegar . We will need 1 deciliter of vinegar to serve us as the second solution and we will add it to the last glass.
• 3 glasses . Since we will have 3 experimental groups, we will need 3 glasses. In the first glass, we will add pure water. In the second glass, we will add water and salt. And in the third glass, we will add vinegar.

Instructions for making Gummy Bear Osmosis Experiment

Check the video at the beginning of the article to see how to conduct this experiment. As mentioned in the required materials section, we used three types of solvent (water, salted water, and vinegar) but you can experiment with any type of solvent.

• Prepare 4 gummy bears (one for every type of solvent, +1 for comparison). Gummy bears are excellent for this experiment because they are made out of sugar, water, and gelatine. Gelatine doesn’t dissolve in water, but it allows water to pass through so it functions as a semipermeable membrane.
• Prepare your solvents. Put pure water in one glass, water with a big spoon of salt into the second glass, and vinegar into the third glass. 1 deciliter of liquid in each glass will be more than enough. You can also experiment with different mixtures, like oil, milk, or soda to see what will happen.
• Put 1 gummy bear into each solution . Leave one gummy bear on the side so you can compare afterward. Leave the gummy bears inside their solutions for a few hours. Check every 3 hours to see the changes.

Results of the osmosis experiment

• After 9 hours, we observed that the gummy bear left in pure water got much bigger than in the other solutions. The water went in! There is just a little bit of water in the gummy bear, so there was big osmotic pressure.
• Gummy bear in salted water got just a little bit bigger . Osmosis at work! Salted water had a lower concentration of water than the pure one, so in this situation, less water went into the gummy bear.
• In vinegar, the gummy bear got bigger , but it also started to fall apart, and that’s because of the acid in vinegar which can dissolve the gelatine.

What kind of solutions did you use and what are the results? Tell us all about your experiment in the comments!

What will you develop and learn?

• Knowledge from chemistry and biology . Osmosis, semipermeable membrane, solutions, etc., all play a big role in the functioning of living organisms. Talking about them will help us in better understanding what is happening on the cell level.
• What is osmosis and how does it work. Without osmosis, there would not be life. So understanding osmosis is important to understand biology.
• Scientific method and conducting experiments. Here, we conducted a scientific experiment with 3 experimental variables (water, salted water, vinegar) and a control variable (gummy bear that we didn’t put into any solution). This enabled us to control every aspect that could influence the outcome of the experiment.
• Learning by doing . We best learn through experience, and here, we conduct our own experiments. So new knowledge while having fun is guaranteed!

We hope you too were enjoying this experiment. If you are in the mood for more great activities, we have some to recommend.

• If you are interested in learning about defusion, a similar process to osmosis, then you can check How to demonstrate diffusion with hot and cold water article.
• We also recommend learning about oxidation and how oxygen reacts with electrons in the Apple oxidation experiment .
• If you are interested in making your own sweet candy, you can learn How to make homemade sugar crystals (Rock Candy) .
• And finally, if you are interested in learning about polarity, the chemical property of atoms, you can learn about it in a simple but fun Colorful milk polarity experiment .

Happy experimenting!

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Gummy Bear Experiment

Osmosis can be a difficult concept for kids to understand. I’ve always found that visual explanations really hit home with kids and help them to understand. Today we have a growing gummy bear experiment that is a perfect compliment to our Gummy Mummy experiment that explores the science of desiccation and diffusion. Because gummy bears are made of gelatin they will not dissolve in water like other candy will. They will however absorb liquids and change in shape and size. We’ve set up an experiment with four different liquids to see the difference in how the gummy bears are able to absorb each and how they change over the course of the day.

Great Growing Gummies – Gummy Bear Osmosis Experiment

What you will discover in this article!

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What is Osmosis?

Scientifically, Osmosis is when solvent molecules (usually water) cross a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration. This creates equilibrium between the solute and solvent, balancing the concentration of solutes on both sides of the membrane. Osmosis is a passive process in that it requires no energy from the cell to occur.

Now – that’s a lot of big words and concepts so let’s break down that vocabulary:

Solvent : substance able to dissolve other substances. Solute : a dissolved substance Membrane : a thin, soft flexible sheet or layer especially of a plant or animal part Semi-Permeable Membrane : a membrane that only allows certain substances to pass through. Concentration : the amount of a component in a given substance. Equilibrium : a state of adjustment between opposing or divergent influences or elements

Gummy Bear Osmosis Lab

Gummy Bears Small Clear Bowls or Jars Water Sparkling Water White Vinegar Oil

I like to start this in the morning so you can check on it throughout the day and see the changes in the gummy bears.

STEP 1: Lay out four bowls on the table and put a gummy bear in each bowl. Then beside each bowl put another gummy bear of the same color so you can compare the two easily over the course of the day.

STEP 2: Measure equal amounts of each of your solvents. We used a quarter of a cup of water, sparkling water, white vinegar and oil and poured them over the gummy bears in the bowl.

STEP 3: This is a great time to have a discussion about osmosis and have your kids make predictions about what they think is going to happen in each bowl and why. What effect might each substance have on the gummy bear? Have the kids write down their predictions.

STEP 4: Set a timer for an hour and let the bears do their thing.

STEP 5: Check back each hour for the rest of the day and write down observations over the course of the day.

Gummy Bear Osmosis Experiment Results

Now the exciting part… the results of our experiment! Let’s take a look at the results individually first.

When gummy bears are soaked in water the bear will swell and grow in size. This is because the water will flow into the gummy bear through its semi-permeable membrane. The sugar molecules try to spread and dissolve but they can’t get out of the gelatin so they expand resulting in the gummy bear expanding.

Sparkling Water

Will have a similar result to water. The only difference is that the addition of carbon dioxide to the water can have an acidic effect on the bears which would cause the outside to soften allowing more water to be able to pass through the bear and it swells up more. You will also be able to observe the carbon dioxide bubble sticking to the outside of the bear.

White Vinegar

White Vinegar will have an acidic reaction with the gummy bear softening the outside of it, however the liquid is not as easily absorbed into the bear as water so the gummy may get softer but will not change in size as much as the bears soaked in water.

Because oil is polar it doesn’t mix well with water or other substances. The oil will have very little effect on the bears and you will not see much change if any at all. This gummy bear will also retain its color the best because the oil isn’t breaking down the bear or being absorbed into it so the structure and color will remain the same.

Comparing the Results

The most fascinating part of this experiment is comparing the results of the different solvents. Set the gummy bears out side by side with their controls so you can visually see the differences.

To get really scientific with your results, which is perfect for your older kids or kids needing more of a challenge, have them weigh and measure the gummies and compare results with the controls and each other.

You can also dissect the gummy bears and view them under a microscope to look for microscopic changes.

Extension Ideas

I think your kids will love this Gummy Bear Lab experiment on Osmosis! Encourage your students to get creative and add other variations like adding things like salt or baking soda to the water to see if it changes the results. Or try other solvents.

Want more osmosis experiments? Try this Rainbow Water Beads Experiment or the Bouncy Egg Experiment which involves a chemical reaction and osmosis.

Want more gummy science? Check out our Gummy Mummies . Or make your own gummies! You can check out these recipes on the site: Valentine’s Day Gummies , Star Wars Gummies , Rainbow Dragon Egg Gummies .

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Stay-at-home science project: Enlarge gummy bears to reveal the secrets of osmosis

By Rachel Feltman

Posted on May 4, 2020 4:00 PM EDT

Welcome to PopSci’s at-home science projects series . On weekdays at noon, we’ll be posting new projects that use ingredients you can buy at the grocery store. Show us how it went by tagging your project on social media using #popsciprojects.

Gummy bears are delicious. That’s not up for debate (though you’re welcome to eat a few to prove the hypothesis). But they’re also the perfect critters to help demonstrate a process that makes life as we know it possible: Osmosis.

Believe it or not, osmosis also happens when you drop gummy bears into water, revealing the most basic inner workings of your body’s cells. Just add water and a spoonful of salt to see it happen before your eyes.

• Time: 5 minutes of prep, and 3 to 9 hours of waiting
• Difficulty: easy

What you’ll need

• Gummy bears, preferably dark in color
• Three small bowls
• 2 tablespoons of salt
• (Optional) Ruler
• (Optional) Kitchen scale

Instructions

1. Fill two of your bowls with cool water. Room temperature is fine, but keep away from hot water—it’ll melt your gummy bears.

2. Add the salt to the first bowl. The second should just contain water.

3. Plop one gummy bear into each bowl. Make sure they’re fully submerged. Leave the bowls somewhere they won’t be disturbed. Gummy bears are tempting—even when they’re salty and soggy!

• Note : We tried different types of gummies (including the sour kind coated with mouth-puckering crystals), and we came to the conclusion that the ideal gummy bears for this experiment are dark in color and chewy instead of soft—just the classic gummy bear . A darker color will not dilute so much as to turn the gummy bear totally clear as it absorbs water, and the thicker gelatin mixture will make the candy less likely to fall apart when you take it out for observation. Also, stay away from sour gummies and those with unusual flavor additives, since they are less likely to yield the intended results.

4. Set aside a third gummy as your experimental control. We recommend you do this before you even think about eating the rest of your gummy bears. It’d be tragic to suddenly realize you ate them all and you no longer have a control for your experiment. Keep it dry.

5. Wait for three hours.

6. Check back in on your waterlogged candies. You can scoop them out with a spoon and observe them on a paper towel if you so choose, but be sure to return them to their proper bowls. Take note of how the gummies have changed—write down your observations so you can contrast them with the end results. You can check in again after the next three hours.

7. (Optional) Take some measurements. If your little experimenters need more of a challenge, you can have them measure the bears with rulers and/or kitchen scales, and calculate just how much size and mass the bears have lost or gained.

8. Wait another six hours. The full transformation should be complete around hour nine.

9. Retrieve your bears from their bowls. Use a small spoon and line them up on a plate or paper towel to see how much they’ve changed. The gummy in plain water should be much larger than the unsoaked candy, while the salted water should have kept its bear roughly the same size—unless it’s caused it to shrink. More on that later.

10. Fill a third bowl with cool water and a tablespoon of salt. Place the expanded, waterlogged gummy bear into it and observe it every few hours. It should get noticeably smaller as it soaks.

How it works

Osmosis is the movement of water through a semipermeable membrane—that is, a material with holes large enough to let some things in, but small enough to keep others out. In this process, water moves through the membrane without force or energy, to make water concentration versus other molecules roughly the same on either side.

This process is important in keeping us alive. The outer membrane of our cells is semipermeable and allows small molecules like water and oxygen to pass through while keeping all the cell’s organelles protected and in place. When it’s time to eliminate waste, the cell will start pushing the toxic molecules out, while absorbing water from our blood through osmosis. Once the cell has balanced its water concentration to the one outside of it, it will stop taking in more liquid, thus preventing the cell from bursting.

Gummy bears are made of gelatin and sugar, and the proteins that make up gelatin are very similar to the outer membranes of our cells. Just like them, the gummy bear’s gelatin “skin” will allow water and other small molecules to pass through while keeping larger ones contained—in this case, those larger molecules are the sugar that make gummy bears taste so good.

When you place a gummy bear into water, the sugar molecules will try to spread out and disperse evenly through the water bowl. But the gelatin membrane won’t let them out. That sugar also makes the gummy have a relatively low concentration of water compared to the liquid around it. Osmosis seeks to correct this imbalance, so water will keep pushing into the gummy and through the membrane until the concentration is the same on either side of the gelatin. This means your gummy is going to absorb lots and lots of water.

In a solution of water and salt, the bowl and the bear have similar water concentrations, so the candy may stay about the same size or even shrink, if the water is salty enough. Just as the sugar in the bear lowers its water concentration, the salt in the bowl means a lower ratio of water to other molecules. As a response, the bear may push out water in order to dilute the liquid inside the bowl. If you place the water-swelled bear into a salt solution, those extra water molecules will leave the bear to lower the salt concentration in the bowl.

If you have time (and gummies) to spare, you can elaborate on this experiment by testing different salt concentrations. You can line up several bowls with increasing quantities of salt in the same amount of water. The more salt you add, the more your candy should shrink.

Home » Free Homeschooling » Gummy Bear Osmosis

Gummy Bear Osmosis

Check out our FUN Gummy Bear Osmosis experiment!

This is a simple and fun experiment for children 12 and under (and their moms).

A quick safety note: 

Don’t let your kids eat the gummy bears after they’ve soaked in the various solutions. The ones in baking soda and vinegar will taste awful, and they will all contain bacteria as your kids will be handling them and then putting them back in the fluids.

AND, if you have a cat like we do, the cat might lick from the containers and/or drop a hair or two among the various solutions.

BTW – because of our cat, I did talk about the importance of strict scientific procedures and how data can be contaminated.  My kids know that our experiment was more of a fun experiment – and that some contamination undoubtedly occurred.

Just a thought – you might want to buy TWO bags of gummy bears – one for the experiment and one for nibbling.

_____________________________________________________________________

Some educational info before you start (so you can explain the science to your kids):

Most sugary candy dissolves in water.  In fact, you might want to try this experiment first, so your kids understand that this is true.

Gummy bears are an exception – they don’t dissolve in water .  This is because they’re made with gelatin . When gummy bears are made, gelatin and water are heated and mixed (like when you make gelatin at home). As the mixture cools, water leaves the candy  and the candy hardens and becomes gummy/chewy.

When you put a gummy bear in water, it is a solute , and the water molecules are a solvent. Since the gummy bear does not contain water (remember, the water was removed when the gummy bear was made), water now moves into the bear by the process of osmosis . Osmosis is the process whereby water moves from a greater concentration of water to a lower concentration of water (from a container of water to the candy bear).

Also, gummy bears have a semi-permeable membrane – their surface has holes in it and these holes allow small, non-charged particles like water in, but don’t let larger particles (like sugar) out.

At the beginning of the experiment, there is less water and more gelatin inside each gummy bear. As time passes, this changes, as the gelatin makes the gummy bear act like a sponge, absorbing water rather than being dissolved in it (like other candies).

Try the  Gummy Bear Osmosis  experiment and see what happens!

_______________________________________________________________

This Gummy Bear Osmosis experiment takes less than an hour to set up, but the actual experiment runs for 48 hours.

Materials You Need for the Gummy Bear Osmosis Experiment

• Gummy Bears
• A glass container for each liquid/solution
• One tablespoon of salt
• A tablespoon of sugar
• One tablespoon of baking soda
• Kitchen scale
• Paper towels
• Clock or timer
• Gummy Bear Experiment Sheet (included at the end of this post, although the spacing is slightly different)
• Gummy Bear Scientific Data Table (included at the bottom of this post)

Instructions for the Gummy Bear Osmosis Experiment

• Label each glass with its contents: water, salt water, sugar water, etc.
• Fill the glass labeled water with one-half cup plain water.
• Fill the glass labeled salt water with one-half cup water. Thoroughly mix in one tablespoon of salt (make sure all the salt is dissolved).
• Fill the glass labeled sugar water with one-half cup water. Thoroughly mix in one tablespoon of sugar (again, make sure all the sugar is dissolved).
• Fill the glass labeled baking soda water with one-half cup water and thoroughly mix in one tablespoon of baking soda.
• Fill the other containers with their respective liquids.
• Select a gummy bear for each glass.
• Measure the length, height and width of each gummy bear, weigh each gummy bear and write this info on the Gummy Bear Scientific Data Table.  If your scale isn’t able to weigh just one gummy bear you can still do this experiment. Visually, your kids will be able to see the difference in the bears pre- and post-experiment.
• Check – and write down the time.
• Now, add a gummy bear to each glass.
• Wait 12 hours.
• Remove the gummy bears from their respective glasses.
• Let your kids ooh and ahh and talk about the differences in the bears.
• Now, measure and if you can,weigh each bear. Use the Gummy Bear Scientific Data Table to write down your results.
• Put the gummy bears back in their solutions.
• Check back after 24 hours and again measure and weigh each gummy bear.  Again, give your kids plenty of time to talk about the results.
• Again, put the gummy bears back in their glasses.
• Check back after 48 hours, measure and weigh each gummy bear. Use the Gummy Bear Scientific Data Table to write down your results.

What did you discover?  Did your gummy bears GROW – by A LOT!?! Which gummy bears grew the most, without losing shape?

Explain scientifically what happened., check out our experiment below., this is the beginning of it..

(our cat lost interest quickly)

Gummy Bear Osmosis Experiment – After 12 hours

Gummy Bear Osmosis Experiment – After 24 hours

Our water gummy bear has lost part of its leg!  And I can clearly see gummy particles in some of the water solutions.

But our vinegar gummy bear isn’t a blob yet, and I’ve heard that’s what happens. I’m getting a little worried – did we do something wrong?

Gummy Bear Osmosis Experiment – After 48 hours

A lot of the gummy bears are falling apart after 48 hours!  I originally planned to check again after 72 hours – but they just won’t make it!  The vinegar gummy is a blob (yeah!), and the water and soda gummy bears are literally falling apart. This gummy bear osmosis experiment was so much fun for the kids!

From http://mirada.oursciencefair.com/SchoolHome.aspx

I’ve included the forms I used below – in case you’d like to use them ____________________________________________________________________________

GUMMY BEAR SCIENCE EXPERIMENT

Gummy bear osmosis.

TAP WATER                                                                                                            

DISTILLED WATER

SALT WATER                                                                                                         

BAKING SODA WATER

SUGAR WATER                                                                                                     

SODA                                                                                                                        

_____________________________________________________________

Scientific Data Table

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Gummy Bear Osmosis Experiment

Gummy Bear Osmosis experiment is a fun demonstration to help explain the tricky subject of osmosis, as well as being a great way to teach experimental design. It’s also an experiment you can eat when you’re finished! Read on to find out why the Gummy Bear Osmosis Experiment is so good at teaching osmosis (obviously!), but also experimental design, mass, weight & volume as well as embedding maths.

OK, so lets start at the beginning……

What is Osmosis?

Osmosis is the diffusion of water molecules from a dilute liquid (where there are many water molecules) to a more concentrated solution (where there are fewer water molecules) across a selectively permeable membrane. Selectively permeable is a membrane which allows some molecules to pass through but inhibits others. These membranes can be found in nature, such as membranes surrounding cells or synthetically made membranes.

Why a Gummy Bear?

The Gummy Bear has a selectively permeable coating which will allow water molecules to diffuse across, but inhibiting other larger molecules. In this osmosis experiment the water molecules move into the bear, thus enlarging it.

Material used

You’ll need these things:

• Gummy bears
• Water (and other liquids for the extended project)
• Paper towels
• Kitchen item for measuring liquids, e.g. measuring cup/jug/cylinder.
• Weighing scales/balance that can weigh to 0.1g increments.

1) Take 2 gummy bears that are the same colour and similar size. Record their weights*. *see Lab Notes below.

Record the weight of the gummy bear before the experiment

2) Take 2 identical cups, and put a gummy bear in each. Fill ONE cup with water so that the bear is submerged, but measure the amount of water you use as this information will be useful later on. The other cup remains dry (no water). This is your control bear which will prove the bear does not enlarge without water!

Set up of the TEST gummy bear.

Set up a control gummy bear (no water)

3) Leave both bears for several hours, or overnight preferably and then compare gummy bears.

Gummy Bear Osmosis – the results

4) The next day, take the bears out of their cups, trying not to lose any water from the wet bear, and pat the wet one dry with a paper towel.

Now weigh both bears, and record the results.

Calculate the weight gained by the enlarged bear by subtracting the weight before from the weight after. We need to check the weight of the control bear as well, as this may have changed too.

Take this a step further if you want to, by calculating the percentage weight* gained.

* see Lab Notes below.

Comparison of before & after weights – this Gummy Bear gained 6.39g

5) Finally, measure the volume of water left behind in the enlarged bear’s cup…has it altered? Where has it gone??

How did the bear get so BIG?

Well, we already know from the introduction that water diffuses from an area of high concentration of water molecules (i.e. a dilute solution) to an area of low water concentration. In this experiment water moves into the Gummy Bear, where there are fewer water molecules, making it swell up. The water keeps moving until the water molecules are evenly spaced out (i.e. have reached an equilibrium). The molecules stop diffusing when they reach equilibrium.

Make this a bigger project.

So we put our bear in water, which obviously has lots of water molecules in, but what if our liquid had fewer water molecules compared to the bear. What would happen? Which direction would the water molecules move and what effect would that have in the bear?

……Over to you to find out….

Extend this experiment by trying different liquids, such as vinegar, salty water, juice and so on. Make sure you set them all up at the same time so the bears spend an equal amount of time in each liquid, and always include a control Gummy Bear (bear in no liquid).

Why must the bear be the the same colour?

Changing the colour adds a new variable to the experiment, and you need to be sure that any change in the gummy bear size is due to the water you are putting them in, and not their colour!

Why do they have to be the same size?

Well they don’t really have to be, but they should be about the same size, for the same reasons we need the colour to be the same. You are calculating the change in weight, which is more accurate than just looking at the bears and saying that one is bigger than the other! What does “bigger” mean?

How to calculate percentage weight gain.

To find out the percentage gain, you divide the weight gained by the start weight and multiply by 100 . This is useful because it allows you to compare the results of different Gummy Bear osmosis experiments, where the start weight will be slightly different for each bear.

Lets look at my example above:

The bear gained was 6.39 grams and the start weight was 1.7g….so, 6.39g divided by 1.7g = 3.76g x 100 = 376%.  So the bear has an increase in weight of 376%.

If you tackle this activity at home you do so at your own risk. If you have as much fun as we did, feel free to share your pictures with us on our Facebook page.

Chief Scientist at Devon Science

Want more easy science to do?

So you liked this activity and want more ideas, right? Well head on over to our blog to find out other cool experiments such as Glowing Fluorescent Liquid  or the Super Easy 6 – a free download with 6 super-easy experiments to try at home!

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Gummy Bear Osmosis Experiment

Learn about the process of osmosis when you try this easy gummy bear osmosis experiment with the kids. Watch your gummy bears grow as you investigate what liquid makes them grow the biggest. We are always on the hunt for simple science experiments and this one is just super fun and easy!

Explore Science With Gummy Bears

A fun gummy bear experiment all in the name of science and learning! There are so many simple science experiments that are quick and easy to set up for young children. Older children can easily add data collection, graphing and charts to turn this fun edible science experiment into more of a challenge!

Grab a bag of gummy bears or alternatively, you can make your own homemade gummy bears with our easy 3 ingredient gummy bear recipe .

Then head into the kitchen to grab your supplies and let’s find out what happens when you add gummy bears to different liquids. Watch your gummy bears as you investigate what makes gummy bears grow the biggest.

LOOK: 15 Amazing Candy Science Experiments

Set Up A Gummy Bear Osmosis Lab

Let’s find out what liquid makes gummy bears grow the biggest! Remember, the dependent variable is the size of the gummy bears and the independent variable is the liquid you use. Learn more about variables in science.

• Gummy bears
• baking soda
• ruler or measuring scale
• optional – stopwatch

TIP: Extend the experiment by using additional liquids such as juice, vinegar, oil, milk, baking soda mixed with water etc.

Instructions:

STEP 1. Carefully measure and pour the same amount of water into 3 cups. Add the same amount of distilled water to another cup if using. Pour the same amount of vinegar into another cup.

STEP 2. Add sugar to one cup of water, baking soda and salt in another. Mix well.

STEP 3. Weigh and/or measure each gummy bear beforehand. Use the printable worksheet above to record your measurements.

STEP 4. Add a gummy bear to each cup.

STEP 5. Then set the cups aside and wait to observe what will happen. Check them again after 6 hours, 12 hours and 24 hours.

TIP: This gummy bear experiment takes at least 12 hours to work!

STEP 6. Remove your gummy bear from the liquid and carefully measure and/or weigh each one. What liquid made the gummy bears grow the biggest? Why was that?

Free Printable Gummy Bear Lab Worksheet

Use the free gummy bear data sheet below to track your results! It’s perfect for older kids to add to a science notebook.

How Does Osmosis Occur In Gummy Bears?

The process of moving water across a semi-permeable membrane from a low concentrated solution to a high concentrated solution is called osmosis . A semi-permeable membrane is a thin sheet of tissue or layer of cells acting as a wall that allows only some molecules like water molecules to pass through.

The main ingredients in gummy bears are gelatin, sugar and flavoring. The semi-permeable membrane in gummy bears is the gelatin.

CHECK OUT: How To Make Slime With Gelatin

It is the gelatin that also stops the gummy bears from dissolving in liquids, other than an acidic solution such as vinegar.

When you place gummy bears in water, the water moves into them through osmosis since gummy bears don’t contain water. The water is moving from a low concentration solution to a high concentration solution.

Learn more about osmosis with our potato osmosis lab.

Using The Scientific Method With Kids

The scientific method is a process or method of research. A problem is identified, information about the problem is gathered, a hypothesis or question is formulated from the information, and the hypothesis is put to test with an experiment to prove or disprove its validity.

Sounds heavy… What in the world does that mean?!?

The scientific method can simply be used as a guide to help lead the discovery process. You don’t need to try and solve the world’s biggest science questions! The scientific method is all about studying and learning things right around you.

As kids develop practices that involve creating, gathering data, evaluating, analyzing, and communicating, they can apply these critical thinking skills to any situation.

💡To learn more about the scientific method and how to use it, CLICK HERE .

Even though the scientific method seems like it is just for big kids, this method can be used with kids of all ages! You can have a casual conversation with younger kids or do a more formal notebook entry with older kids!

Gummy Bear Science Fair Project

Science projects are an excellent way for older kids to show what they know about science. They can also be used in various environments, including classrooms, homeschools, and groups.

Kids can take everything they have learned about using the scientific method , stating a hypothesis, choosing variables , and analyzing and presenting data.

💡 Sample Hypothesis: If a gummy bear is placed in water overnight, then it will increase in size due to the process of osmosis, where water molecules move from an area of higher concentration (the water) to an area of lower concentration (inside the gummy bear).

Want to turn this gummy bear osmosis experiment into an awesome science fair project? Check out these helpful resources.

• Science Project Tips From A Teacher
• Science Fair Board Ideas
• Easy Science Fair Projects

More Fun Candy Science Experiments

• Try a candy taste test with chocolate.
• Why do the colors not mix in this skittles experiment?
• Dissolving candy corn experiment is fun to do !
• Make a coke and mentos eruption !
• What happens when you add pop rocks to soda?
• Try this floating M&M experiment.

Helpful Science Resources

Here are a few resources that will help you introduce science more effectively to your kiddos or students and feel confident yourself when presenting materials. You’ll find helpful free printables throughout.

• Best Science Practices (as it relates to the scientific method)
• Science Vocabulary
• 8 Science Books for Kids
• All About Scientists
• Science Supplies List
• Science Tools for Kids

Printable Science Projects For Kids

If you’re looking to grab all of our printable science projects in one convenient place plus exclusive worksheets and bonuses like a STEAM Project pack, our Science Project Pack is what you need! Over 300+ Pages!

• 90+ classic science activities  with journal pages, supply lists, set up and process, and science information.  NEW! Activity-specific observation pages!
• Best science practices posters  and our original science method process folders for extra alternatives!
• Be a Collector activities pack  introduces kids to the world of making collections through the eyes of a scientist. What will they collect first?
• Know the Words Science vocabulary pack  includes flashcards, crosswords, and word searches that illuminate keywords in the experiments!
• My science journal writing prompts  explore what it means to be a scientist!!
• Bonus STEAM Project Pack:  Art meets science with doable projects!
• Bonus Quick Grab Packs for Biology, Earth Science, Chemistry, and Physics

Subscribe to receive a free 5-Day STEM Challenge Guide

~ projects to try now ~.

Science Project Ideas

Gummy Bear Experiment

The gummy bear experiment is a fun activity that teaches the basic concept of osmosis to the little ones in an easy manner. They will also be thrilled at the idea that their favorite gummy bears could teach them a lesson or two in science.

Gummy Bear Science Project Instructions

Hypothesis for growing/shrinking gummy bears.

When a gummy bear is placed in a hypotonic solution (e.g. water) then it will increase in mass and volume. On the other hand, its mass and volume decrease when placed in a hypertonic solution (e.g. salt water). Hypertonic refers to a higher concentration of solutes and hypotonic is just the reverse.

Things Needed

• Physical balance or digital weighing machine
• Sieve, plastic fork or screen
• Graph paper
• Measure the dimensions (length, breadth and height) of the bear with a scale. Measure its mass with the balance.
• Fill the bowl with water.
• Completely immerse the gummy bear in the water.
• Let the bowl sit overnight in a place away from direct sunlight.
• Next day, lift the bear from the water with a plastic fork, sieve or screen.
• Record the dimensions and mass of the bear again.
• Do the same observation each day for a couple of days more.
• Plot a graph with the time in hours along the X-axis (the dependent variable) and the mass or weight of the gummy bear along the Y-axis (independent variable). Check the nature of the graph.

Things You Can Try

• Set up a series of bowls on the table and fill them with different solutions like that of baking soda, vinegar, salt, distilled water, etc. Make similar observations as above for each one of them. Compare your results.
• Also, check if the taste and/or color of the bears have changed.

Gummy Bear Osmosis Video

How does it work.

The ingredients of gummy bears are sugar, water, and gelatin, with little water content. Due to the process of osmosis, i.e., the movement of water molecules through a selectively permeable membrane from an area of high concentration to that of a lower concentration, the bear starts to grow. However, it doesn’t get dissolved as the gelatin is insoluble in water.

On trying out the different ideas, you will find that the degree of expansion of the candy depends on the liquid on which it is kept. However, vinegar, which is actually an acid, can dissolve the candy .

This simple trick can prove to be a cool science fair idea. The kids will be enthralled to display their knowledge to the audience in a fun way.

References:

https://biozone.weebly.com/uploads/2/7/4/2/274298/gummy_bear_osmosis.pdf

https://tinkerlab.com/incredible-growing-gummy-bears/

https://www.childrensmuseum.org/blog/saturday-science-growing-gummy-bears

https://www.homeschool.com/blog/index.php/2014/04/homeschool-science-gummy-bear-osmosis/

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--> Gilla: Dela: 3 gummy bears 2 drinking glasses Refrigerator Something to heat water with (for example a microwave oven or a kettle) Short explanation Long explanation. How big will a gummy bear be after 1, 2, 4, 6, 12, 24, 48, 72 hours in water? Does it matter if you cover the glass or not? Is it possible to shrink a swollen gummy bear completely down to its former size again? What other things swell in water? What other things shrink in sugar water? 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Includes a gummy bear science project worksheet. Gummy Bears Osmosis Experiment - STEM Little Explorers Here, we conducted a scientific experiment with 3 experimental variables (water, salted water, vinegar) and a control variable (gummy bear that we didn’t put into any solution). This enabled us to control every aspect that could influence the outcome of the experiment. Gummy Bear Experiment - The Science of Osmosis White Vinegar will have an acidic reaction with the gummy bear softening the outside of it, however the liquid is not as easily absorbed into the bear as water so the gummy may get softer but will not change in size as much as the bears soaked in water. Stay-at-home science project: Enlarge gummy bears to reveal ... Believe it or not, osmosis also happens when you drop gummy bears into water, revealing the most basic inner workings of your body’s cells. Just add water and a spoonful of salt to see it... Gummy Bear Osmosis Science Experiment - How to Homeschool Try the Gummy Bear Osmosis experiment and see what happens! This Gummy Bear Osmosis experiment takes less than an hour to set up, but the actual experiment runs for 48 hours. Materials You Need for the Gummy Bear Osmosis Experiment Gummy Bear Osmosis Experiment - Devon Science Gummy Bear Osmosis experiment is a fun demonstration to help explain the tricky subject of osmosis, as well as being a great way to teach experimental design. It’s also an experiment you can eat when you’re finished! Gummy Bear Osmosis Experiment - Little Bins for Little Hands It is the gelatin that also stops the gummy bears from dissolving in liquids, other than an acidic solution such as vinegar. When you place gummy bears in water, the water moves into them through osmosis since gummy bears don’t contain water. How to make Gummy Bears Osmosis Experiment - YouTube In this video, we will show you how to make an Osmosis experiment with Gummy Bears.Osmosis is a process of molecules moving through a semi-permeable membrane... Gummy Bear Experiment - Science Project Ideas The gummy bear experiment is a fun activity that teaches the basic concept of osmosis to the little ones in an easy manner. They will also be thrilled at the idea that their favorite gummy bears could teach them a lesson or two in science. Gummy bear osmosis - Experiment Archive Grow and shrink gummy bears by placing them in water with or without sugar. An experiment about how osmosis affects the cells. Fun and easy science experiments for kids and adults. essay homework paper phd review speech study thesis